How could you modify an animal so that it would distinguish more shades of green?

Question

Quizplus · Accepted Answer

The ability to distinguish different shades of colors is based on the presence of different opsins in the retina. By introducing genes for opsins that respond to different wavelengths in the green region of the spectrum, an animal could distinguish more shades of green. Option A is also a possibility, but introducing more cones would not necessarily increase the ability to distinguish between different shades of green. Option C is not realistic as green fluids would not necessarily enhance the perception of green light. Option D is too specific to the mechanisms of rod cells and option E is not relevant to the perception of color.

How Could You Modify an Animal So That It Would